Predicted to enable ATP hydrolysis activity; heat shock protein binding activity; and protein folding chaperone. Involved in mitochondrial unfolded protein response. Located in mitochondrion. Expressed in muscle cell. Human ortholog(s) of this gene implicated in Alzheimer's disease; Parkinson's disease; autosomal dominant sideroblastic anemia 4; and rheumatoid arthritis. Is an ortholog of human HSPA9 (heat shock protein family A (Hsp70) member 9).